Ru Ruthenium 44 101.07 8 5 d 44 2310.0 3900.0 [Kr] 4d7 5s1 2 8 18 15 1 12.4 9.9E-8% Silver Hexagonal 2.2 1.54 {"1":"710.2","2":"1620","3":"2747"} 710 101.3 126 +4,3,6,8 1.34 8.3 25.52 567.77 0.238 117.0 0 Solid, Paramagnetic, Conductor, TransitionMetal, Metal, Stable, Natural roo-THE-ni-em Rare, extremely brittle, silver-gray metal. Used to harden platinum and palladium. Aircraft magnetos use platinum alloy with 10% ruthenium. Found in pentlandite and pyroxinite. wl5ZYb0hDTc Ruthenium

In 1869, Dmitri Mendeleev predicted its existence and some of its properties based on its position on his periodic table and called the element eka-silicon.

In 1886, Clemens Winkler found the new element along with silver and sulfur, in a rare mineral called argyrodite.

The first silicon-germanium alloys were obtained in 1955. From the Latin word Germania, Germany 44 1844 Karl Karlovich Klaus Russia From the Latin word "Ruthenia" meaning "Russia"

Germanium is not known to be toxic

Germanium and the oxide are transparent to infrared radiation

The most common use of germanium is as a semiconductor in electronics.

Germanium is used in transistors and in integrated circuits.

It is used as an alloying agent and as a catalyst.

It is also used in infrared spectroscopes and infrared detectors.